A very easy way to make a DC voltage test pen, so you can determine the positive and negative polarity #electronic #testpen #voltage #dcv #led #equipment #workshop #useful #tutorials #guide #solution #service | Emonk Emg Elektro
0:16
A very easy way to make a DC voltage test pen, so you can determine the positive and negative polarity #electronic #testpen #voltage #dcv #led #equipment #workshop #useful
Emonk Emg Elektro. Emonk Emg Elektro · Original audio. A very easy way to make a DC voltage test pen, so you can determine the positive and negative polarity #electronic #testpen #voltage #dcv #led #equipment #workshop #useful #tutorials #guide #solution #service
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